How long does the lavender tone last and how does it fade? — TONING SEMI-PERMANENT EFFECT COLOR Bad Girl LAVENDER 150ML

As a semi-permanent direct dye, longevity varies significantly:

• On bleached, porous hair: Colour may last 8–12 washes, fading through softer lavender, then pale silver-lilac, before returning to a cool blonde base.
• On less porous, light blonde hair: Typically 4–8 washes with a gentler fade.
• On grey or white hair: Often holds slightly longer (6–10 washes) because the cuticle is naturally more compact, but the translucent lilac veil fades to a clean silver-white.

Factors that accelerate fading: frequent washing, hot water, sulfate shampoos, chlorine, UV exposure, and heat styling. To extend the tone: wash less often, use cool water, choose a sulfate-free shampoo for coloured hair, and consider a colour-depositing conditioner in a matching lavender shade for top-ups between full applications.

Because there is no oxidative chemistry, you will not get a visible regrowth line — new growth simply shows your natural colour while the tinted lengths fade gracefully. This makes it low-maintenance for anyone comfortable with a gradually shifting shade rather than a fixed colour.